microPlatform update 0.13

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Posted on Apr 11, 2018

8 min read

linux zephyr update cve bugs

Summary

Zephyr microPlatform changes for 0.13

Zephyr tree with new networking features, driver updates, and bug fixes, among other improvements.

A new zmp tool build option, --overlay-config, makes it easier to mix-in configuration fragments when building.

Experimental support for the Wistron WCN14A2A LTE-M Modem is provided in Zephyr microPlatform specific patches provided by Open Source Foundries.

Linux microPlatform changes for 0.13

OSF Unified Linux Kernel updated to the 4.14.26 stable release. Support for OTA software updates is now enabled by default in the Linux microPlatform, supporting OSTree with TUF and compatible with the ATS Garage and ATS OTA Community Edition services.

Zephyr microPlatform

Summary

Zephyr tree with new networking features, driver updates, and bug fixes, among other improvements.

A new zmp tool build option, --overlay-config, makes it easier to mix-in configuration fragments when building.

Experimental support for the Wistron WCN14A2A LTE-M Modem is provided in Zephyr microPlatform specific patches provided by Open Source Foundries.

Highlights

  • Zephyr tree from the v1.12 merge window
  • A small set of MCUboot changes
  • OSF samples with updates for Zephyr API changes and a new zmp feature
  • OSF initial support for LTE-M

Components

MCUboot

Features

Logging on MyNewt:
  • The MyNewt port supports logging.
Switch to base64 library for Zephyr port:
  • The Zephyr serial boot target now uses the base64 library provided by the RTOS instead of linking in mbedTLS just for this feature.
Sample application improvement:
  • The sample application now uses BOOTLOADER_MCUBOOT instead of configuring MCUboot-related options by hand.

Bugs

  • Not addressed in this update

Zephyr

Features

arduino_101_ble removal:
  • The duplicated arduino_101_ble board was removed. Users should use the curie_ble board name instead.
Non-volatile configuration system:
  • The Apache MyNewt non-volatile configuration system was ported to Zephyr. The purpose of this subsystem is to allow storage and retrieval of persistent values to flash or other storage media. Storage access is either via a file system or the lower-resource but less featureful Flash Circular Buffer (FCB) framework, which was also adapted from MyNewt.
Network interface re-work:
  • The net_if structure, which represents a network interface, was radically altered to move almost all of its fields in preparation for VLAN support. Much of the information is still available via the net_if structure with additional indirection; for example, the "->ipv4" structure is now in "->config.ip.ipv4". Users accessing fields through the convenience functions in net_if.h may not need code changes, but code which accessed fields directly will need updates.
Config knobs for allocating IP addresses:
  • This initial work was followed up by static declaration of the number of IP addresses desired on the device, via new CONFIG_NET_IF_MAX_IPV4_COUNT and CONFIG_NET_IF_MAX_IPV6_COUNT knobs and APIs for allocating structures like net_if_config_ipv4_get(). This saves memory when the user specifies the number and type of IP addresses to suit their application.
Options and priority for network contexts:
  • Network contexts (Zephyr's internal, socket-like structure) now support setting and getting options. The initial supported option is a priority value, which allows classifying traffic flows by priority. The new APIs are available as net_context_set_option() and net_context_get_option(), with NET_OPT_PRIORITY the only value.
Network flow traffic class support:
  • This is meant to be combined with traffic class support controlled by a new CONFIG_NET_TC_COUNT option, which allocates work queues meant for handling flows within a certain traffic class. Independent support for transmit and receive traffic classes is supported.
Networking refactoring:
  • Numerous other under-the-hood changes and refactoring commits were merged affecting various networking areas.
Message queues for POSIX:
  • The POSIX target now has a message queue compatibility API.
Nordic HAL and SVD updates:
  • The Nordic HAL was updated to version 1.0.0, and SVD (system view description) files were merged for nRF5 SoCs. These files provide a structured representation, in XML format, for all of the peripherals, registers, and register fields available on an SoC. They are commonly used by embedded IDE debuggers and other libraries which interact with registers on a running target, etc.
Documentation improvements:
  • Various documentation improvements were made, affecting Bluetooth, web sockets, and the display of Kconfig symbols.
New drivers:
  • New driver support includes GPIO P1 port on nRF52840, sample support for USB HID composite configurations, SPI master suport for lsm6dsl accelerometer/gyroscopes, and improved temperature sensor reporting.
New samples:
  • New sample features include custom board definitions, networking traffic classes, USB HID mouse support, and CoAP PUT and POST methods.
Foundries.io initial support for LTE-M:
  • A number of Foundries.io-specific patches were merged to enable the Wistron WCN14A2A LTE-M Modem. These are being targeted for upstream merge, but have been included here for subscriber access in the meantime.

Bugs

User-mode security fix for ARM:
  • User mode code can no longer access PPB/IO regions on ARM targets with MPUs.
Bluetooth fixes:
  • A Bluetooth fix for an assert in use cases when whitelists were used was merged, among other fixes and simplifications.
nRF DK board switch fixes:
  • nRF DK boards now correctly have pull-up modes configured on GPIOs connected to switches.
USB fixes:
  • USB bugs causing random address access and unaligned access faults in netusb and various CDC ACM issues were fixed.
lis3dh accelerometer fix:
  • A bug affecting I2C burst read on the lis3dh accelerometer was fixed.
Stack pointer randomization fix:
  • An arithmetic underflow when stack pointer randomization is enabled was fixed.
Networking fixes:
  • Various fixes to the network management layer, as well as protocols such as DNS, TCP, and UDP, were merged.

hawkBit and MQTT sample application

Features

DTLS specific settings in a .conf overlay:
  • The DTLS-specific configuration file, prj_dtls.conf, contained duplicated configuration with prj.conf, the non-DTLS configuration. This duplication was eliminated and the resulting fragment has been renamed to overlay-dtls.conf. The sample can now be built with DTLS support using zmp with "./zmp build --overlay-config overlay-dtls.conf zephyr-fota-samples/dm-lwm2m".
Temperature sensor changes:
  • The temperature driver usage was updated to follow upstream Zephyr API deprecation of the single temperature sensor channel in favor of separate ambient and die temperature sensor channels.

This also resulted in a JSON schema change for the data reported via MQTT.

Network interface changes:
  • Some network interface management code was updated to keep up with upstream API changes.

Bugs

  • Not addressed in this update

LWM2M sample application

Features

Temperature sensor changes:
  • The temperature driver usage was updated to follow upstream Zephyr API deprecation of the single temperature sensor channel in favor of separate ambient and die temperature sensor channels.

The temperature sensing LWM2M interface was not affected.

Network interface changes:
  • Some network interface management code was updated to keep up with upstream API changes.
Initial LTE-M support:
  • Initial support for the Wistron WCN14A2A LTE-M Modem was merged. This can be used with the frdm_k64f board.

See the commit log in f8a19f23 ("dm-lwm2m: add LTE-M Modem WCN14A2A .conf fragment") for usage instructions.

Bugs

  • Not addressed in this update

Linux microPlatform

Summary

OSF Unified Linux Kernel updated to the 4.14.26 stable release. Support for OTA software updates is now enabled by default in the Linux microPlatform, supporting OSTree with TUF and compatible with the ATS Garage and ATS OTA Community Edition services.

Highlights

  • OSF Unified Linux Kernel updated to 4.14.26.
  • New layer Meta Updater added to LMP (provides SOTA support).
  • U-Boot support for Dragonboard 410c and 820c.
  • VMDK and VDI images are now available for the intel-corei7-64 target.
  • Support for OTA software updates using OSTree and TUF.
  • OTA compatibility with ATS Garage and ATS OTA Community Edition.

Components

Meta OSF Layer

Features

Layer Update:
  • OSF Unified Linux Kernel updated to 4.14.26. New u-boot-script-toradex recipe added. U-Boot-Compulab updated to the 2017.07-cl-som-imx7-1.1 release. New u-boot-ostree-src recipe added. Python3-docker updated to 2.7.0. Python3-docker-compose updated to 1.19.0. Docker-compose is now installed by default in lmp-gateway-image. New lshw recipe added based on latest upstream git snapshot.
U-Boot support for DB410c and DB820c targets:
  • Default LMP image now ships with u-boot support for the DB410c and DB820c targets (requirement for OTA+ support).
OSTree support:

Bugs

  • Not addressed in this update

OpenEmbedded-Core Layer

Features

Layer Update:
  • Musl updated to the latest upstream master. Python 3 target and native recipes updated to 3.5.4. Ncurses updated to 6.0+20171125. Tar updated to 1.30. Pigz updated to 2.4. Wget updated to 1.19.4. Rsync updated to 3.1.3. Ninja updated to 1.8.2 (major release update). RPM updated to 4.14.1. Openssl updated to 1.0.2n. Libnl updated to 3.4.0. Boost updated to 1.66.0. Iputils updated to 20161105. Linux-libc-headers updated to v4.15. Ccache updated to 3.3.5. Libva updated to 2.0.0. Strace updated to 4.20.

Bugs

qemu:

  • VNC server implementation in QEMU was found to be vulnerable to an unbounded memory allocation issue.

  • CVE-2017-15124

Meta Virtualization

Features

Layer Update:
  • Fixes required by latest OE-Core update.

Bugs

  • Not addressed in this update

Meta OpenEmbedded Layer

Features

Layer Update:
  • Python-ndg-httpsclient updated to 0.4.4. Python 3 depends on python3-misc removed due missing _pydecimal.py.

Bugs

  • Not addressed in this update

Meta Yocto

Features

Layer Update:
  • Fixes required by latest OE-Core update.

Bugs

  • Not addressed in this update

Meta Freescale

Features

Layer Update:
  • U-boot-fw-utils added to u-boot-fslc-fw-utils provides.

Bugs

  • Not addressed in this update

Meta Freescale 3rdparty

Features

Layer Update:
  • broadcom-nvram-config changed to use nonarch_base_libdir instead of /lib.

Bugs

  • Not addressed in this update

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